IKEA has stopped nearly all sales of meatballs at its furniture store cafeterias across Europe after tests in the Czech Republic showed some contained horsemeat.

A European scandal erupted last month when tests in Ireland revealed some beef products contained horsemeat, triggering recalls of ready-made meals in several countries and damaging confidence in Europe's vast and complex food industry.

The Czech State Veterinary Administration reported its findings to the EU's Rapid Alert System for Food and Feed, it said in a statement.

The inspectors took samples for DNA tests in IKEA's store in the city of Brno from a product labelled as "beef and pork meatballs", the statement said.

Free trade is the oldest argument in federal politics and the issue that literally defined the federation era but opposition exists to the TPP, courtesy of the Investor-State Dispute Resolutions clause.